Solar Panel:15-100WP, polycrystalline silicon Battery:20-150Ah, maintenance-free Valve-Regulated Lead Acid Battery Light Source:5-40W/12V, energy-saving lamp/LED Controller:5A/12V special controller for solar lamps, protection against over charge and over discharge, light control and time control Lamps post:2-5m, hot galvanization spraying-plastic Lighting time:fully charged lamps can work 6-12 hours a day (adjustable) and 3-7 cloudy/rainy days Customer designs are welcome